these are cool motor alright.. buddy had the 186 .. it was bored to 192 'yella terra' head , triple carbs, lumpy cam.. in the GTR torana body.. thing was a rocket ! (same as this for those who aren't sure).. I repaired the front a couple times for him.. the he got rid of it...

a real cheap speed option for these is to put a 149 head on 186/202 ,, they have bigger valves , and offer a higher compression ratio. then a twin carb manifold. just that added a reasonable chunk of horses to these motors.. add all that to an Australian 3 speed vertical shift ("impala") brand floor shift (stock car boys love these shift assemblies) ... ahh the good old days